Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
68 + 20 = ______
17 + 10 = ______
81 − 10 = ______
62 + 10 = ______
9 × 10 = ______
1 × 10 = ______
64 + 20 = ______
71 − 10 = ______
88 + 10 = ______
58 + 20 = ______
66 + 10 = ______
83 − 10 = ______
4 × 10 = ______
66 + 20 = ______
89 − 10 = ______
27 − 10 = ______
88 + 20 = ______
57 + 20 = ______
25 − 10 = ______
27 + 10 = ______
